13400401120040 has 64 divisors (see below), whose sum is σ = 32894419973760. Its totient is φ = 4872498865920.

The previous prime is 13400401120037. The next prime is 13400401120109. The reversal of 13400401120040 is 4002110400431.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13400401119994 and 13400401120021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4597877 + ... + 6923963.

It is an arithmetic number, because the mean of its divisors is an integer number (513975312090).

Almost surely, 2^{13400401120040} is an apocalyptic number.

13400401120040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13400401120040 is an abundant number, since it is smaller than the sum of its proper divisors (19494018853720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13400401120040 is a wasteful number, since it uses less digits than its factorization.

13400401120040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339202 (or 2339198 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 13400401120040 its reverse (4002110400431), we get a palindrome (17402511520471).

The spelling of 13400401120040 in words is "thirteen trillion, four hundred billion, four hundred one million, one hundred twenty thousand, forty".